Setting up one Gateway to failover to a second in the event of an outage

Mike Johnson
Mike Johnson used Ask the Experts™
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Hello,

I have two internet gateways from 2 different service providers, the intention being that if one Internet Gateway went down then interent traffic would route thru the other gateway.  I added persistent route statements to my PC  (using route -p add cmd) and assigned a metric of 1 to the faster connection and and a metric of 10 to the slower one.  In short if the Gateway with a metric of 1 goes down--it does not failover to the other Gateway.  How can I rectify this?

Thanks

Upon further investigation I have found the failover works on Windows XP boxes but NOT Vista and Windows 7.  What the difference ?
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The static routes in Windows don't support failover, it will continue to use the route with the lower priority. You would need a hardware firewall/router that has failover capabilities.
Mike JohnsonNetwork/Desktop Administrator

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Commented:

Is the fact that Windows doesnt support failover something new?   It works perefectly on all nodes running Windows XP.  It seems odd Microsoft would take away that functionlity.  Please advise.
Top Expert 2007
Commented:
You need to handle the routing of traffic at the gateway device depending on the gateway model/capabilities.

Your gateway/router would receive the traffic, determine if the internet link was up, if so then send over the internet, if not then it would use the other gateway as the next hop.

Windows will still use the primary gateway if the device is up even if the internet connnection behind it is down. It won't use the next gateway until it cannot communicate with the primary gateway device.
Mike JohnsonNetwork/Desktop Administrator

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Commented:
Case closed

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